So if the bacterial odor molecule is present, the CO2 sniffers turn off, presumably to allow the mosquito to concentrate on the close-range foot target.
For example, in our sinuses, there are millions of receptor proteins that detect different odor molecules by switching from an 'off state' to an 'on state.
比如，鼻窦就有几百万个检测不同气味分子的受体蛋白，可实现从‘关闭状态’到‘开启状态’的转换。
3
The room gave off a clean, sharp odor of linseed oil that reminded me of my father's clothes when he had returned from the tile factory at night. It smelled like wood and fresh-cut hay mixed together.